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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/renderer/pepper/ppb_broker_impl.h"
#include "base/logging.h"
#include "base/metrics/histogram_macros.h"
#include "content/common/frame_messages.h"
#include "content/common/view_messages.h"
#include "content/renderer/pepper/host_globals.h"
#include "content/renderer/pepper/pepper_broker.h"
#include "content/renderer/pepper/pepper_plugin_instance_impl.h"
#include "content/renderer/pepper/plugin_module.h"
#include "content/renderer/render_thread_impl.h"
#include "content/renderer/render_view_impl.h"
#include "ppapi/c/pp_errors.h"
#include "ppapi/shared_impl/platform_file.h"
#include "third_party/WebKit/public/web/WebDocument.h"
#include "third_party/WebKit/public/web/WebPluginContainer.h"
using ppapi::PlatformFileToInt;
using ppapi::thunk::PPB_Broker_API;
using ppapi::TrackedCallback;
namespace content {
enum class PepperBrokerAction { CREATE = 0, CONNECT = 1, NUM };
// PPB_Broker_Impl ------------------------------------------------------
PPB_Broker_Impl::PPB_Broker_Impl(PP_Instance instance)
: Resource(ppapi::OBJECT_IS_IMPL, instance),
broker_(nullptr),
connect_callback_(),
pipe_handle_(PlatformFileToInt(base::SyncSocket::kInvalidHandle)),
routing_id_(RenderThreadImpl::current()->GenerateRoutingID()) {
ChildThreadImpl::current()->GetRouter()->AddRoute(routing_id_, this);
UMA_HISTOGRAM_ENUMERATION("Pepper.BrokerAction", PepperBrokerAction::CREATE,
PepperBrokerAction::NUM);
}
PPB_Broker_Impl::~PPB_Broker_Impl() {
if (broker_) {
broker_->Disconnect(this);
broker_ = nullptr;
}
// The plugin owns the handle.
pipe_handle_ = PlatformFileToInt(base::SyncSocket::kInvalidHandle);
ChildThreadImpl::current()->GetRouter()->RemoveRoute(routing_id_);
}
PPB_Broker_API* PPB_Broker_Impl::AsPPB_Broker_API() { return this; }
int32_t PPB_Broker_Impl::Connect(
scoped_refptr<TrackedCallback> connect_callback) {
// TODO(ddorwin): Return PP_ERROR_FAILED if plugin is in-process.
UMA_HISTOGRAM_ENUMERATION("Pepper.BrokerAction", PepperBrokerAction::CONNECT,
PepperBrokerAction::NUM);
if (broker_) {
// May only be called once.
return PP_ERROR_FAILED;
}
PepperPluginInstanceImpl* plugin_instance =
HostGlobals::Get()->GetInstance(pp_instance());
if (!plugin_instance)
return PP_ERROR_FAILED;
PluginModule* module = plugin_instance->module();
const base::FilePath& broker_path = module->path();
// The callback must be populated now in case we are connected to the broker
// and BrokerConnected is called before ConnectToBroker returns.
// Because it must be created now, it must be aborted and cleared if
// ConnectToBroker fails.
connect_callback_ = connect_callback;
broker_ = module->GetBroker();
if (!broker_) {
broker_ = new PepperBroker(module);
// Have the browser start the broker process for us.
RenderThreadImpl::current()->Send(
new FrameHostMsg_OpenChannelToPpapiBroker(routing_id_, broker_path));
}
RenderThreadImpl::current()->Send(
new ViewHostMsg_RequestPpapiBrokerPermission(
plugin_instance->render_frame()->render_view()->GetRoutingID(),
routing_id_,
GetDocumentUrl(),
broker_path));
// Adds a reference, ensuring that the broker is not deleted when
// |broker| goes out of scope.
broker_->AddPendingConnect(this);
return PP_OK_COMPLETIONPENDING;
}
int32_t PPB_Broker_Impl::GetHandle(int32_t* handle) {
if (pipe_handle_ == PlatformFileToInt(base::SyncSocket::kInvalidHandle))
return PP_ERROR_FAILED; // Handle not set yet.
*handle = pipe_handle_;
return PP_OK;
}
GURL PPB_Broker_Impl::GetDocumentUrl() {
PepperPluginInstanceImpl* plugin_instance =
HostGlobals::Get()->GetInstance(pp_instance());
return plugin_instance->container()->GetDocument().Url();
}
// Transfers ownership of the handle to the plugin.
void PPB_Broker_Impl::BrokerConnected(int32_t handle, int32_t result) {
DCHECK(pipe_handle_ == PlatformFileToInt(base::SyncSocket::kInvalidHandle));
DCHECK(result == PP_OK ||
handle == PlatformFileToInt(base::SyncSocket::kInvalidHandle));
pipe_handle_ = handle;
// Synchronous calls are not supported.
DCHECK(TrackedCallback::IsPending(connect_callback_));
connect_callback_->Run(result);
}
bool PPB_Broker_Impl::OnMessageReceived(const IPC::Message& message) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(PPB_Broker_Impl, message)
IPC_MESSAGE_HANDLER(ViewMsg_PpapiBrokerChannelCreated,
OnPpapiBrokerChannelCreated)
IPC_MESSAGE_HANDLER(ViewMsg_PpapiBrokerPermissionResult,
OnPpapiBrokerPermissionResult)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled;
}
void PPB_Broker_Impl::OnPpapiBrokerChannelCreated(
base::ProcessId broker_pid,
const IPC::ChannelHandle& handle) {
broker_->OnBrokerChannelConnected(broker_pid, handle);
}
void PPB_Broker_Impl::OnPpapiBrokerPermissionResult(bool result) {
broker_->OnBrokerPermissionResult(this, result);
}
} // namespace content
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